212 



ILLUSTRATIONS OF THE 



See 



up and letting down of the ancient ftrata. 



§ 43- 



1 88. As the fpots where the primary and fe- 



condary rocks may be feen in conta<5l with one 

 -another are of great importance in geology, and 

 prefent to the fenfes the moil llriking monii^ 

 nients of the high antiquity and great revolu- 

 tions of the globe, it may be ufefui to point out 

 fuch of them as have been obferved in this ifland. 

 To thofe which Dr Hutton has defcribed, I have 

 a few more to add, the refult of fome geological 



-»? 



excurlions, which I made in company with the 

 Right Honourable Lord Webb Seymour, to 

 whofe affiftanee I have been much indebted in 

 the profecation of thefe inquiries. 



189. The moil fouthern junction which we 

 obferved is at Torbay, where the ancient fchif- 

 tus which prevails along the coait, from the 

 Land's End to that point, receives a covering of 

 red horizontal ftandftone, the fame which com- 

 pofes the greater part of Devonlhire. The fpot 

 where the immediate contad is vilible, is on the 

 ihore, a little to the fouth of Paynton ; 



an 



d 



one circumflance, v.'hich among many others 

 ferves to diftinguifh the different formation of 

 the two kinds of rock, is, that the fchiflus, which 

 is elevated here at an angle of about 45°, is full 



of quartz veins, Vv^hich veins are entirely con- 

 fined 



